expertise in electric and hybrid technology." nerad does note that the market is still "largely niche" and says more technological advances are necessary for green cars to hit the mainstream. on this earth day 2013, we wanted to talk about the surprising number of companies that are turning large parts of their corporate property into wildlife habitats. margaret o'gorman is president of the wildlife habitat council. margaret, how common is this? - it is very common, and it is increasingly common. we have nearly 100 corporate members of wildlife habitat council that have been working with us for our 25 years of existence to create and restore wildlife habitat on their operating lands, their campus lands, and all of their other properties. - i know general motors is one of the largest participants. they have 25 sites. do all of those add up to a significant amount of impact in wildlife restoration? - they certainly do. you can't combine them all together in one impact, because each site is very, very different. we have the renaissa